Publication Date:
2019
Description:
〈p〉Publication date: 15 November 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Journal of Alloys and Compounds, Volume 809〈/p〉
〈p〉Author(s): Pan Tan, Yi Yang, Yudong Sui, Qudong Wang, Yehua Jiang〈/p〉
〈div xml:lang="en"〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉The influences of Al–10Sr or/and Al–5Ti–1B on the as-cast microstructure and the mechanical properties of Al–12Si–4Cu–2Ni–0.8 Mg alloys at elevated temperature were studied. Studies have shown that the addition of 0.1 wt% Ti has little effect on 0.02 wt% Sr modification, and the grain size decreases significantly. The addition of 0.1 wt% Ti could increases the mechanical properties at the room temperature and elevated temperature due to the grain refinement. However, owing to the modification of eutectic Si, the mechanical properties of the alloys increase at ambient temperature and then slightly decrease at elevated temperature. The Ultimate tensile strength and Yield strength of the alloy with 0.01 wt% Ti and 0.02 wt% Sr at ambient temperature were the maximum values of 249.5 Mpa and 207.5 Mpa, respectively. The specimen tensile fracture morphology under different temperature in most test temperature (25 °C, 200 °C) were characterized by brittle transgranular fracture, and when the test temperature reaches 350 °C, it is characterized by ductile fracture.〈/p〉〈/div〉
〈/div〉
Print ISSN:
0925-8388
Electronic ISSN:
1873-4669
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
